Ingot-mold bottom plate



R. S. FOISTER r 4 meow mow BOTTOM PLATE Filed Sept. 1. 1922 3 Sheets-Sheet 1 mmw @c'it. 30, 1923.-

R. S. POISTER INGOT MOLD BOTTOM PLATE Filed Sept l.

1922 3 Sheets-Sheet 3 gwtwntox,

rennet entree stares earner series.

RALPH S. POISTER, OF CANTON, OHIO, ASSIGINOR T UNITED ALLOY STEEL CORPORA- TION, OF YORK, N. Y., A CORPORATION OF NEW YORK.

mew-Morn orrow PLATE.

Application filed September 1, 1922. Serial No. 585,662.

To all whom it may concern Be it known that I, RALPH S. Porsrnn, a citizen of theUnited States, and a resident of Canton, in the county of Stark and State of Ohio, have invented certain Improvements in Ingot-Mold Bottom Plates,

of which the following is a specification.

The invention relates to molds for easting ingots from molten metal, which may 19 be tapered from a smaller lower section to a larger upper section and are provided with an aperture in the bottom throughwhich the ingot can be detached and driven from the mold; and the object of the improve-- ment is to provide means for closing the aperture and protecting its rim from the action of the molten metal. The aperture in the bottom of such a mold has frequently been closed by a metal plate,

29 having its edge portion seated in a recessaround the rim of the aperture; and difliculty has been experienced, when molten metal is being poured into the mold, from a portion of the same flowing under one edge not only permitting some of the molten .metal to flow downward or into the aperture, but causing the plate .to rise, either partly or entirely, into the body of the in ot.

urthermore, a flow ofmolten metal into I A preferred form of the invention, and

various modifications thereof, are illustrated in the accompanying drawings, part hereof, in which Figure 1 is an elevation section of an ingot mold, showing. the improved plate and plug therein; h

Fig. 2, an elevation section of a'plate in a mold for casting the preferred form of the of the plate and lifting it from its seat, and

has been removed from may be brokenofi from the forming ,ture 26, and place the same in a mold b Fig. 3, a similar view cast to the plate;

Fig. 4', a plan section of the same, on line- 4-4, Fig. 3; v

Fig. 5, a detached perspective view of the preferred form of plate and plug; and

Figs. 6 .to 15 are fragmentary sections showing modified methods of attaching a plate and plug together.

Similar numerals refer throughout the drawings.

The mold 16 is open at the upper end 17 for receiving molten metal and its sides 18 are preferably tapered downward and inward to a bowl shaped bottom 19 in the centerof which is a conically tapered aperture 20, around which aperture thebottom of the bowl is preferably countersunk to form a recess 21 for receiving the edge portions of a plate 22. i

A conically tapered plug 23 is secured to the plate, whence it may extend downward showing the plug to similar parts ill? in contact with the sides of the aperture and preferably protrudes a substantial distance below the bottom of the mold.

The attachment of the plug to the plate holds the same fiatwise upon its seat around the mouth of the aperture, and prevents a tilting of the plate which would permit the molten metal to flow under one edge thereof.

The mold preferably rests upon a table 24 or other support having an opening 25 into which the plug may protrude, and for the purpose of detaching an ingot from the mold, the same may be raised and lowered so that the plug will strike upon the table in well known manner; and when the ingot the mold, the protruding plu bottom of t e ingot by striking it with a hammer or the like.

The preferred way of making an attached p ate and plug is to provide a rolled, cast or forged plate 22 with a centralaper- 27 countersunk to receive it bodily and provided with a central semi-spherical recess 28 upon which is superposed; another mold block 29 having a taperedopening 30 in which molten iron or steel is poured to form the body of the plug 23 tegether with a neck ock tee

31 extending through the central aperture in the plate, and a head 32 is formed in the recess of the lower mold block, as shown in Fig. 3, thus formin the connected plate and phirg, as shown in iigs. 1 and 5.

igs. 6, 7 and 8 show modified forms of plates and hollow plugs cast integrally together; Fig. 9 shows a hollow plug having a shank riveted in a central aperture in the plate; Fig. 10 shows a similar plate and plug connected by a separate rivet; Fig. 11 shows a plate with a cup shaped plug spot welded thereto; Figs. 12 and 13 show p ugs of diiferential lengths riveted and boltedrespectively to a plate; and Figs. 14 and 15 show plugs with woodenpins in their heads secured to a plate by nails; all of which modified forms of plug and plate serve substantially the same purpose as the 2 preferred form illustrated and more fully described.

I claim:

1. A mold having an aperture in ,its bottom, and a plate seated on the rim of the aperture and having a plug secured thereto fitting into the aperture.

2. A mold having an aperture in its bottom with a recess around its rim, a plate seated in the recess, and a plug attached to the plate fitting into the aperture.

3. A mold having an a erture in its bottom with a recess aroun its rim, a plate seated in the recess, and a plug attached to the plate fitting into the aperture, and protruding below the same.

4.. A mold bottom plate havingan aperture therein, and a plug cast upon one side of the plate with a neck extending through the aperture and a head engaging the other side of the plate.

RALPH S. POISTER. 

